<%--
  Created by IntelliJ IDEA.
  User: MSI
  Date: 2020/12/16
  Time: 18:11
  To change this template use File | Settings | File Templates.
--%>
<%@ page language="java" %>

<%
//    验证登陆状态
if (request.getSession().getAttribute("userid")==null){
    response.sendRedirect("login.jsp");
}
%>